Checking Program - Electrical Circuit QWS
| Test | Test Equipment | Test | Notes | Nominal | ||
|---|---|---|---|---|---|---|
| Step | Multimeter | |||||
| MKM - 587 - A | of | between | Value | |||
| 05b | Voltmeter range 20V, DC | Voltage supply VSV1 Y58 (Campo / Brava 4JA1 only) | Y58, ter. 1 | Y58, ter. 2 | · Disconnect wiring harness plug from VSV1 Y58 |
· Reconnect wiring harness plug to half acceleration switch S163
| · Ignition "ON" | ||
|---|---|---|
| · QWS switch "ON" | > 11.5 V | |
| · Depress accelerator pedal half way |
· Measurements at wiring harness plug
| · Reconnect wiring harness plug after measurements | 0 V | |
|---|---|---|
| Troubleshooting: | Nominal Value: | Cause of Fault: |
· Ignition "OFF"
· Disconnect wiring harness plug from half acceleration switch S163
· Measure resistance with multimeter
| from: Half acceleration switch S163, wiring harness plug ter. 2 | ||
|---|---|---|
| to: VSV1 Y58, wiring harness plug ter. 1 | approx. 0 W | · Line interrupted or short circuit to voltage |
from: Half acceleration switch S163, wiring harness plug ter. 2
to: VSV1 Y58, wiring harness plug ter. 1
· Reconnect wiring harness plug to half acceleration switch S163
· Measure resistance with multimeter
| from: VSV1 Y58, wiring harness plug ter. 2 | ||
|---|---|---|
| to: Ground | approx. 0 W | · Line interrupted |
from: VSV1 Y58, wiring harness plug ter. 2
to: Ground
· Ignition "ON"
· Measure voltage with multimeter
from: VSV1 Y58, wiring harness plug ter. 1
to: Ground
| · Accelerator pedal released | > 11.5 V | |
|---|---|---|
| · Depress accelerator pedal half way | 0 V | · Half acceleration switch S163 incorrectly adjusted (see section 8.3.4, Adjustment of Half Acceleration Switch) |
or
· Half acceleration switch S163 defective
| If nominal values are attained: | · See section 8.2.3 Vacuum Circuit QWS for further diagnosis on the vacuum circuit |